The He-Boy-Girl-Dislikers club is very strict about security.
They don't want to risk their treehouse being contaminated by cooties, cosmetics or any other girl borne plague.
Each week they change their secret password to prevent infiltration.

Decipher the clues to determine what this week's code is.

spike attached perpendicular to a handle + opposite of down + Potamoi daughter of Okeanos